#include<stdio.h>
int main()
{
	int year;
	printf("please enter a year\n");
	scanf("%d,&year");
	if((year%4==0)&&(year%100!=0)||(year%400==0)){
		printf("%d is a leap year\n",year);
	}
	else{
		printf("%d isn't a leap year\n",year);
	}
	return 0;
 } 
